Posting from AWS-API Gateway to Lambda

Question

I have a simple C# Aws Lambda function which succeeds to a test from the Lambda console test but fails with a 502 (Bad Gateway) if called from the API Gateway (which i gener

Answer 1

I also lost a lot of time trying to get a "Path Parameter" passed in on a Get method. For example, if you had a path such as

/appsetting/123

... then you'd have something configured like

By specifying the resource "appid" as {appid} it tells the API Gateway to capture this as a path variable.

One key discovery I found was that by posting in the body of a POST type action, my Lambda would work. Reading around on some other threads, I then discovered I can transform my path variable into a body of the GET action by:

1. Selecting the GET value (as pictured)
2. Clicking Integration Request
3. Creating a mapping template as shown below

Now when I test, I'm able to plug in my appid value in only and get the proper result. Hope this helps someone.